Sasami Tsukuyomi is a high schooler who refuses to leave her room, spending her days watching the outside world through a surveillance program on her brother Kamiomi's computer. As the shrine maiden of the Tsukuyomi line she carries the power the goddess Amaterasu once lent her family, and the gods who answer to it take every wish Kamiomi grants her far too literally, so each attempt to keep her happy risks throwing the world into chaos. The three Yagami sisters, Kagami, Tsurugi and Tama, spend their time cleaning up the fallout.